Karl`s PC Help Forums

Math Question
waffler - 18-2-2014 at 00:01


LSemmens - 18-2-2014 at 07:13

90


Nimuae - 18-2-2014 at 07:55

72 ?


John_Little - 18-2-2014 at 08:32

I'd say 72, too, Nim.


Quaver - 18-2-2014 at 09:35

72 for me too.


LSemmens - 18-2-2014 at 09:43

Where's Scholar when you need him?


grayles - 18-2-2014 at 09:47

It is 90 for me.

? x (?+1)=A
2= 2*(2+1)=6
3= 3*(3+1)=12
4= 4*(4+1)=20
5= 5*(5+1)=30
6= 6*(6+1)=42
7= 7*(7+1)=56
8= 8*(8+1)=72
9= 9*(9+1)=90


John_Little - 18-2-2014 at 11:14

Actually I think Grayles and Leigh are right! for some reason some of us missed out on 7 and 8. It jumps from 6 to 9 and caught us out.



2x3=6
3x4=12
4x5=20
5x6=30
6x7=42
7x8=56
8x9=72
9x10=90


grayles - 18-2-2014 at 11:24

LSemmens got the right answer first, I just agreed with him.


Nimuae - 18-2-2014 at 15:02

Quote:
Originally posted by John_Little
Actually I think Grayles and Leigh are right! for some reason some of us missed out on 7 and 8. It jumps from 6 to 9 and caught us out.





That's just sneaky !


marymary100 - 18-2-2014 at 17:44

Definitely 90. ;)


waffler - 18-2-2014 at 20:54

And winner is Mr Semmens

Just testin to see who was payin attention :D